/*
 * Copyright (C) 2017-2019 Dremio Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dremio.sabot.op.receiver.merging;

import javax.inject.Named;

import com.dremio.exec.exception.SchemaChangeException;
import com.dremio.exec.record.VectorAccessible;
import com.dremio.sabot.exec.context.FunctionContext;

public abstract class MergerTemplate implements Merger {
  static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(MergerTemplate.class);

  public MergerTemplate() throws SchemaChangeException { }

  public abstract void doSetup(@Named("context") FunctionContext context,
                               @Named("incoming") VectorAccessible incoming,
                               @Named("outgoing") VectorAccessible outgoing) throws SchemaChangeException;

  public abstract int doEval(@Named("leftIndex") int leftIndex,
                                @Named("rightIndex") int rightIndex);

  public abstract void doCopy(@Named("inIndex") int inIndex, @Named("outIndex") int outIndex);
}
